Automatic closure control



May 6 1924. 1,493,443

w. H. TIBBALS AUTOMATIC CLOSURE CONTROL Filed Jan. 25. 1923 2 Sheets-Sheet 1 r w INVENTOR l WlTNESS' Hwmua ATTORNEY May 6 1924. 1,493,443 w. H. TIBBALS AUTOMATIC CLOSURE CONTROL Filed Jan. 25, 1923 2 Sheets-Sheet 2 INVENTOR /7 {R wa'msss I I was 7 BY H MUM. L \mmg ATTORNEY Patented May 6, 192a j I entree ".sra'ras Q WALTER H. 'rrnnnns, or SYRACUSE} NEW YORK. .assrenon To SYRACUSE-VALLEY oonronn'rron, or SYRACUSE, NEW your, A oonrona'rron or N W YORK.

AUTOMATIC onosnnnconrnon I Application arm e as, 1923. Serial No. 614,771. To all whom it may concern; parts of the device will be'broughtoutin W Be it known that I, WALTER H. TmBnLs, the following description. a cltizen of the United States of America, In the drawings:

mm I

and a resident of Syracuse, in the county. Figure 1 is an inner face view of a portion L of Onondaga, 1n the State of New York, of a window frame andilower and upper;v

have I invented new and useful Improvesash together with one of myimproved sash ments in an Automatic Closure Control, of supporting and releasing devices in operawhich the following, taken in connection tive position upon the window casing, the with the accompanying drawings, is a full, one side shown as holding thelower sash clear, and exact description. ,in partially opened, position.

This invention relates to, clock-controlled Figure2yis angenlarged face view of the weight supporting and releasing mechanism detached device exclusive of the chain's or, for holdinga self-closingnwindow sash in cables. a f an open position for a pre-determined in- Figure Sis a horizontal sectional view terval of time and .then automatically retaken on line3-3,Figure 2 except that the leasing it to allow it to close at the end of cloclr is shown in top plan. that period, although it is evident, certain Figure 4c isaface view of thesupplemen-s features of the invention may be used for ta l case containing the sash'supporting pawl supporting and releasmg other devices Such and detent with the cover removed-,1 and also.

-- as draft 'andcheclr dampers of hOuseheatshowing the adjacent portion of theclock ers. self-closing'valves and the like, mechanism for trippingthe detent. V The main object is to combine in a uni- In order that. my invention may'be'cle artary article of manufacture any of the .well- 1y understood lihave shown a portion. of a;

known types of alarm clocks preferably of window frame '-A and lower andgu 'er I thesmaller size with'thesash holding meanssash a and a;' together 'withfthe in such manner that when the alarm mechsash supporting and releasing mechanism anism is set to release at a certain time, a oper'atively connected-tothe-slower saslrfor part of said alarm mechanism usually at holdingit in a partiallyopened position. the back of the clock will be set in motion This sash supporting and releasing mech- '80 to release a sash supporting pawl and anism comprises an ordinary clock '1 thereby allow thesash to close. preferably of smallsizehaving alspindle One of the specific objects is tofassemble 2 which constitutes a part of the alarm the sash supporting pawl and its cloclrmechanism of the clockto be set and held, controlled detent in such relation that the against' rotation for any periodflof time '85 detent may be tripped by a part of ithe within say, twelve hours and "to be autoclock mechanism without appreciably afmatically released by the clock mechanism fecting the regular operation of the clock in the well-known manner for alarm clocks and at the same time to-bring those parts at the .end of that period. H into close compact relation without sacri- The back'of the clock may be secured in'-9o icing their durability and efficiency. any well-known manner to aback plate Another object is to provide the bah off which in this instance forms acover the clock with a supporting plate which'is plate for asupplemental case and is hinged to the supplemental case containing hinged at 5- to one end of said suppleff j the sash supporting pawl and detent in such mental case to swing through an arc 5 manner as to form a cover plate or door of substantially degrees 3 or from its for the supplemental case and. permit said closed position shown'by 'full. lines in cover plate with the clock thereon to be Figure 3 to lts open posit on shown by opened for re-setting the pawl and detent dotted lines in the same figure, the other and also for rewinding the clock and .resetend of the cover plate +3 being provided ting the alarm mechanism when desired. with a spring catcl .-6- :a dapted tofric Other objects and'uses relating to'speeif c tiqnally. engage the:' recessflf- 7:. Imifithe corresponding end of the supplemental case -l, said catch also constituting a finger piece whereby the cover plate may be conveniently opened by hand.

The spindle 2 extends through an opening in the back plate 3 into the interior of the supplemental case 4 and is provided with one or more crank arms -8 adapted to revolve with the spindle when the latter is released after having been previously set against rotation in the'usual manner for alarm clocks, although the alarm is not shown.

Secured to one of the upright sides of either sash for example the lower sash a/, is an upright guide consisting in this instance of a bead chain cable 9 attached at both ends to the sash near the lower and upper edges thereof and having its remaining portions free.

A similar sash supporting cable 10 is provided at its lower .end with a ring or loop l1 which is slidable lengthwise over and upon the guide chain 9 and adapted to be locked thereto by tilting 1t from a horizontal position, as for example, by upward pull upon the chain 10.

The upper end of this chain -l0 is also provided with a ring or loop 12-- for engagement with one end of a holding pawlor lever -13- which is pivoted intermediate its ends to the inner face of the back wallet the supplemental case -4- by means of a pivotal-pin or stud 1 lso that its outer end may extend through a slot or opening 15 in the corresponding endof said case extending downwardly and laterally into the adjacent portion of the bottom of the case to permit the holding pawl or lever -13 to swing from a substantially horizontal normal position toward a vertical position, the end wall of the slot in the corresponding end of the case constituting a stop shoulder 16 for limiting the up wardly swinging movement of the outer end of the lever while the opposite end wall of the slot in the bottom of the case forms a stop shoulder -17- to limit the release movement of the lever to less than an angle of 90 degrees whereby its inner end may cause the lever to return to its horizontal position.

A detent lever '1S-- preferably made in the form of a bell crank is pivoted at its angle to the back wall of a case flbv means of a pivotal pin or stud -l9- di rectly over the inner end of the pawl 13 when the latter is in its normal position so that one of its arms as 20- will automatically swing by its own weight into engagement with the upper edge of the inner end of the pawl l3- until limited by a stop pin 22 projecting inwardly from the back of the case 4..

The other arm 2l= of the bell crank lever 18- extends horizontally from the pivotal pin l9- toward and into the path of movement of the crank arm 8 of the clock spindle -2 and is preferably made of relatively thinspring metal capable of yielding laterally in case the crank arm 8- should be more or crosswise of the adjacent end thereof when closing the cover plate 3- with the clock thereon.

In this event, the inner edge of the crank arm 8 will simply engage the face of the spring and press the same backwardly against its own tension without in any way affecting the position of the detent 20 and would remain in this position until the crank arm was released and then allowed to rotate thereby causing it to travel out of engagement with the inner face of the spring which latter would then be returned by its own tension against a stop pin EZ3 ready to be engaged substantially horizontal position by the de tent 18. a

The sash amay be raised and lowered but independently of the cable 10 b simply holding the ring 11- between the fingers in a substantially horizontal pOsitlOn" and when opened to the desired position for ventilation or other purposes, the ring 11 will be caught in the links ot' the adjacent portion of the guide -9 while the ring 19 at the upper end of the cable -l0- will be engaged with the outer end of the pawl 18.

Now, if the device has been set to hold the window open for ventilation purposes during the night and to release the window to allow it to close atfsay 7 oclock in the morning the rotation of the spindle -2- and its crank arm 8 will at that time trip the detent 18- by dotted lines in Figure 4: and thereby release the pawl -13- whereupon the weight of the sash drawing down upon the cable 10- will rock the outer end of the pawl -13 downwardly toward a vertical position Or until the ring -12 disengages therefrom, whereupon the inner end of the pawl will immediately return it to a horizontal position against the stop 16- or will at least permit it to be reset by hand in 8hpfllding engagement with the detent -l i and tripped by the crank arm 8 during its continued rotato the position shown This latter operation may be readily accomplished and the clock re-wound and its alarm mechanism re-set by simply swinging the cover plate 3 with the clock thereon to its open position which permits access to the detent and pawl in the case -4: and also permits access to the winding and setting mechanism at the back of the clock.

It is evident from the foregoing description that this device may be used for supporting various weighted members for automatically releasing them at the end of said interval of time.

I claim:

1. In a weight supporting and releasing mechanism, a case having a'hinged cover plate adapted to be opened and closed, a

clock mechanism mounted on the cover plate to swing therewith and having one'of its members rotatable and adapted to be set against rotation to be released at any predetermined time, said member projecting into the case when the cover plate is closed,

a pawl pivotally mounted within the case and having one end projecting through an opening therein, a detent within the case engaging the pawl to hold the latter against movement and a portion thereof extending into the path of movement of said member to be tripped thereby when the member is rotated, in combination with a weighted member, and connections between said detent and weighted member for holding the latter against movement by its own weight.

2. In combination with a weighted member adapted to move in one direction by its own weight, a relatively stationary case, a pawl pivoted intermediate its ends within the case and having one end projecting through an opening therein, supporting means for the weighted member normally carried by the outer end of said pawl, a pivoted detent within the case engaging the inner end of the pawl for holding the'pawl against movement by the weighted member, and clock-controlled means onthe case for tripping the detent at a certain time.

3. In a weight supporting and releasing device, the combination with a weighted member adapted to move in one direction by its own weight, a guide on said member, a supporting member adjust-able along said guide and provided with means for holding it in its adjusted position to support the weighted member in different positions, a holding pawl for said supporting member, a detent for the pawl, and clock-controlled means for tripping the detent at a predetermined time.

4; In combination with a weighted member adapted to move in one direction by its own Weight, a stationary case having a hinged cover plate, means for supporting the weighted member including a pawl and a detent therefor, both pivotally mounted within the case independently of the cover plate, and clock-actuatedmeans mounted on the cover plate to swing therewith and pro vided with means for tripping the pawl at a predetermined time When-the cover plate is closed.

5. In combination with a window sashand a frame therefor, a casing mounted on the window frame, means for holding the window sash against closing including a tripping means being mounted on the cover plate to swing therewith.

6. In combination with a self-closing window sash and a frame'therefor, anupright guide mounted on one side of the window sash, a holding member having its lower end provided with means adjustable along the guide and interlocked therewith to hold the sash in differentvpositions, a case mounted on the window frame and provided with.

a hinged cover plate, a pawl pivoted intermediate its ends within the case and extend ing through an opening therein for supporting the upper end of the sash holding member, a detent pivotally mounted within the case for holding the pawl against movement by the sash, and a clock mounted on the cover plate to swing therewith, and pro vided with means for engaging and tripping the detent at a predetermined time when the cover plate is closed.

7. A sash holding and releasing means as described in claim 6 in which the portion of the detent engaged by the tripping means of the clock is yielding in the direction of the closing movement of the cover plate to enable the cover plate to be closed in case its yielding part should lie in the path of movement of said tripping means when closing the door. 1 8. A sash supporting device including a detent, and a motor actuated member for tripping the detent movableto and from its operative position, the portion of the detent engaged by said member being yielding in case it lies in the path of movement of said member when the latter is moved to its operative position.

In witness whereof I have hereunto set my-hand this 19th day of January, 1923.

WALTER H. TIBBALS. Witnesses:

H. E. CHASE, RITA CAMPoLIE'ro. 

